Thread: Tapering Holes
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Old 11-26-2017, 12:54 PM
jimmontg jimmontg is offline
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Join Date: Jan 2016
Location: Now live in Las Cruces NM.
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I have two tapered hand reamers, a small one for 5/64ths to 1/4" and one from 3/16ths to half inch. I don't know where you could get them as I inherited these from my grandfather. I suppose you can Google small diameter tapered reamers. I looked at some, but the smallest I saw was .128 which would be fine for 1/8th inch, but I have never seen a hand reamer as small as the one I have. The big one yes, but not the little one and they are not cheap. You can do as Don recommended and use a #40 (.098) for the 3/32nd hole and a #30 (.128) for the 1/8th inch and drill down a short way.

If you are careful you can use a drill gun and slightly wobble the drill a little bit and then peen as well. Here is a link for a small set of diamond hand reamers.
https://www.micromark.com/Precision-...icromark%20PLA


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Last edited by jimmontg; 11-26-2017 at 12:58 PM. Reason: additions
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